Charmless Three-body $B$ Decays at BABAR

Details Charmless Three-body $B$ Decays at BABAR Charmless Three-body $B$ Decays at BABAR

2008-10-03

arxiv.org/abs/0810.0566v1

Physics

High Energy Physics

High Energy Physics - Experiment

Parallel talk at ICHEP'08, Philadelphia, USA, July 29 - August 5, 2008. 4 pages

Scientific paper

We present Dalitz-plot analyses of $B^+\to K^+\pi^-\pi^+$ and $B^0\to K^+\pi^-\pi^0$ using the data sample collected at the $\Upsilon(4S)$ by the BABAR detector. We have found evidence for direct CP-violation in the decay $B^\pm\to\rho^0 K^\pm$, with a CP-violation parameter ${\cal A}_{CP}={\Gamma_{B^+}-\Gamma_{B^-}\over \Gamma_{B^+}+\Gamma_{B^-}}= (+44\pm10\pm4^{+5}_{-13})%$, where $\Gamma_{B^\pm}$ are the decay rates. The uncertainties are statistical, systematic, and model-dependent, respectively. We also search for the suppressed decays $B^+\to K^-\pi^+\pi^+$ and $K^+K^+\pi^-$ and improve upper limits on the decay branching fractions.

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